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Speed or Reliability CompromiseandBalance. MGB A fun well balanced road car A fun well balanced road car Ideal for most types of competition? Ideal for.

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Presentation on theme: "Speed or Reliability CompromiseandBalance. MGB A fun well balanced road car A fun well balanced road car Ideal for most types of competition? Ideal for."— Presentation transcript:

1 Speed or Reliability CompromiseandBalance

2 MGB A fun well balanced road car A fun well balanced road car Ideal for most types of competition? Ideal for most types of competition? Driving tests - ok Driving tests - ok Sprints and hill climbs - good Sprints and hill climbs - good Rallies - good Rallies - good Races - excellent Races - excellent

3 Safety First = Safety Fast Cockpit mods for comfort Cockpit mods for comfort Brakes Brakes Suspension Suspension Wheels & tyres Wheels & tyres Engine tuning Engine tuning Body modifications Body modifications

4 Comfort in the car Are you sitting comfortably? Are you sitting comfortably? Seat belts Seat belts Fire extinguisher Fire extinguisher Master switch Master switch Instruments Instruments Oil pressure light Oil pressure light

5 BRAKES Safety is all important – you only get one chance with the brakes Safety is all important – you only get one chance with the brakes New hydraulics New hydraulics Cooling Cooling Pad material Pad material Shoe material Shoe material Balance is all important Balance is all important

6 Discs and calipers To V8 or not to V8? To V8 or not to V8?

7 Road & track day brake pad compounds Mintex M1144 Fast road/sprint/hill climb/rally compound Mintex M1144 Fast road/sprint/hill climb/rally compound Hawke HPS Fast road compound. Low dust & noise. Works from cold. Hawke HPS Fast road compound. Low dust & noise. Works from cold. Hawke HP+ Fast road/track day compound. Works from cold. High friction output. Some dusting and noise. Hawke HP+ Fast road/track day compound. Works from cold. High friction output. Some dusting and noise. Carbotech materials Carbotech materials

8 Racing brake pad compounds Mintex M1155 – Circuit racing compound Mintex M1155 – Circuit racing compound Hawke Black - High initial torque/ bite. Good on lighter cars. Temp. 100°F -900°F Hawke Black - High initial torque/ bite. Good on lighter cars. Temp. 100°F -900°F Hawke Blue Excellent all round race compound with excellent torque/bite, yet exhibits good pedal feel. Temp 250°F °F Hawke Blue Excellent all round race compound with excellent torque/bite, yet exhibits good pedal feel. Temp 250°F °F Hawke HT10 - Race compound. 300°F °F High torque with smooth initial bite. Low wear rate. Hawke HT10 - Race compound. 300°F °F High torque with smooth initial bite. Low wear rate. Carbotech materials Carbotech materials

9 Carbotech pad compounds CARBOTECH PANTHER The predecessor to the Panther Plus, the Panther is also an excellent track pad which can also be used on the street with good results. With a coefficient of friction of , and an operating temperature range of 150F to 1100F, the Panther provides excellent stopping power with very good modulation, while remaining rotor friendly, whether hot or cold CARBOTECH PANTHER The predecessor to the Panther Plus, the Panther is also an excellent track pad which can also be used on the street with good results. With a coefficient of friction of , and an operating temperature range of 150F to 1100F, the Panther provides excellent stopping power with very good modulation, while remaining rotor friendly, whether hot or cold

10 Carbotech pad compounds CARBOTECH PANTHER PLUS A high torque brake compound delivering reliable and consistent performance over a very wide operating temperature range (150F to 1300F). Advanced compound matrix provides an excellent initial "bite", high coefficient of friction ( ), and very progressive brake modulation and release characteristics. Extremely high fade resistance, very rotor friendly, excellent cold stopping power, and low noise when hot or cold. Primarily designed for track use, but can also be used with good results on the street. CARBOTECH PANTHER PLUS A high torque brake compound delivering reliable and consistent performance over a very wide operating temperature range (150F to 1300F). Advanced compound matrix provides an excellent initial "bite", high coefficient of friction ( ), and very progressive brake modulation and release characteristics. Extremely high fade resistance, very rotor friendly, excellent cold stopping power, and low noise when hot or cold. Primarily designed for track use, but can also be used with good results on the street.

11 Carbotech pad compounds CARBOTECH PANTHER XP An extremely high torque brake compound with a wide operating temperature range (200F to 1450F+). Unparalleled initial bite at race temperatures, high coefficient of friction ( ), excellent modulation and release characteristics, extremely high fade resistance, very rotor friendly and excellent wear rates. Designed for race/track use, but can be driven to and from the race track if necessary; not intended as an aggressive street pad. CARBOTECH PANTHER XP An extremely high torque brake compound with a wide operating temperature range (200F to 1450F+). Unparalleled initial bite at race temperatures, high coefficient of friction ( ), excellent modulation and release characteristics, extremely high fade resistance, very rotor friendly and excellent wear rates. Designed for race/track use, but can be driven to and from the race track if necessary; not intended as an aggressive street pad.

12 Brake shoe materials Mintex M20 or equivalent for road use Mintex M20 or equivalent for road use Carbotech Kellate Metallic Race Brake Shoes The ultimate racing material offering superb retardation and low wear. The highest co-efficient of friction currently available for brake shoes. Able to withstand high temperatures and extremes of load. Suitable for all circuit and endurance racing. Coefficient of friction Carbotech Kellate Metallic Race Brake Shoes The ultimate racing material offering superb retardation and low wear. The highest co-efficient of friction currently available for brake shoes. Able to withstand high temperatures and extremes of load. Suitable for all circuit and endurance racing. Coefficient of friction

13 Carbotech shoe compounds CARBOTECH SILVER STREAK 912 An advance organo-metallic compound specially formulated for rear drum applications in lighter weight race cars (< 2850lb.), as well as disc-brake applications for street-driven vehicles of all types. High friction coefficient of 0.46 to 0.48, providing excellent braking in the rear without any risk of lock-up. Very good brake modulation throughout the entire brake pedal travel range, with excellent wear characteristics, providing an outstanding value. CARBOTECH SILVER STREAK 912 An advance organo-metallic compound specially formulated for rear drum applications in lighter weight race cars (< 2850lb.), as well as disc-brake applications for street-driven vehicles of all types. High friction coefficient of 0.46 to 0.48, providing excellent braking in the rear without any risk of lock-up. Very good brake modulation throughout the entire brake pedal travel range, with excellent wear characteristics, providing an outstanding value.

14 Carbotech shoe compounds CARBOTECH KELATED METALLIC GREEN 913 A D.O.T.-approved high-performance compound, Carbotech Kelated Metallic (CKM) achieves a very high coefficient of friction (approx to 0.50) by taking advantage of a chemical reaction within the friction mass, which creates a tri-alloy metallic film at the liner/drum interface when subjected to heat and pressure. Designed to overcome the shortcomings of other liner materials, CKM is very versatile and provides excellent braking performance in a wide variety of applications. Excellent wear characteristics and a very high resistance to lock-up under hard braking. Optimal recommended operating temperature range is from ambient to 750F. CARBOTECH KELATED METALLIC GREEN 913 A D.O.T.-approved high-performance compound, Carbotech Kelated Metallic (CKM) achieves a very high coefficient of friction (approx to 0.50) by taking advantage of a chemical reaction within the friction mass, which creates a tri-alloy metallic film at the liner/drum interface when subjected to heat and pressure. Designed to overcome the shortcomings of other liner materials, CKM is very versatile and provides excellent braking performance in a wide variety of applications. Excellent wear characteristics and a very high resistance to lock-up under hard braking. Optimal recommended operating temperature range is from ambient to 750F.

15 Brake balance What do you need? What do you need? How to adjust the balance How to adjust the balance Rear wheel cylinder sizes Rear wheel cylinder sizes Brake balance valve Brake balance valve

16 Wheel cylinder sizes GWC1122 – – GT from 1970 GWC1122 – – GT from 1970 GWC1103 – 0.80 – Roadster, all V8 and later GT GWC1103 – 0.80 – Roadster, all V8 and later GT GWC1102 – 0.75 – Midget 1275 GWC1102 – 0.75 – Midget 1275 GWC1129 – – Midget 1500 GWC1129 – – Midget 1500 GWC1101 – Mini GWC1101 – Mini

17 Suspension Spring rates Spring rates Shock absorbers Shock absorbers Anti-roll bars Anti-roll bars Bush material Bush material Camber and castor angles Camber and castor angles Toe-in? Toe-in? Problems? Problems?

18 Standard front springs AHH lbs/in9.965 AHH lbs/in9.965 Chrome bumper roadster AHH lbs/in9.09 AHH lbs/in9.09 Chrome bumper GT BHH lbs/in9.32 BHH lbs/in9.32 GT V8 BHH lbs/in10.2 BHH lbs/in10.2 All rubber bumper cars

19 Alternative front springs AHT21480lbs/in8.63 AHT21480lbs/in8.63 AHT21A520lbs/in8.1 AHT21A520lbs/in8.1 AHT21B600lbs/in7.5 AHT21B600lbs/in7.5 AHT22600lbs/in7.75 AHT22600lbs/in7.75 AHT23600lbs/in8.0 AHT23600lbs/in8.0 AHT24600lbs/in8.5 AHT24600lbs/in8.5 AHT21C700lbs/in6.85 AHT21C700lbs/in6.85 Race800lbs/in7.75 Race800lbs/in7.75

20 Rear springs Chrome bumper cars AHH645399lb/in4.83 AHH645399lb/in4.83 AHH708093lbs/in4.83 AHH708093lbs/in4.83 AHC3199lbs/in5.15 AHC3199lbs/in5.15 BHH lbs/in5.572 BHH lbs/in5.572 AHH lbs/in4.37 AHH lbs/in4.37 AHT20124lbs/in3.37 AHT20124lbs/in3.37

21 Rear springs Rubber bumper cars BHH lbs/in4.99 BHH lbs/in4.99 BHH lbs/in5.44 BHH lbs/in5.44 BHH lbs/in4.53 BHH lbs/in4.53 MGCs MGCs AHC797103lbs/in4.83 AHC797103lbs/in4.83 AHC791103lbs/in5.41 AHC791103lbs/in5.41

22 Bushes and bump stops Standard – rubber – ugh!! Standard – rubber – ugh!! V8 – metalastik – good V8 – metalastik – good Polyurethane – excellent Polyurethane – excellent Nylatron – generally too hard Nylatron – generally too hard Alter bump stops for lowered cars Alter bump stops for lowered cars

23 Camber and caster Negative camber wishbones Negative camber wishbones Eccentric top king pin bushes Eccentric top king pin bushes Caster reduction kits Caster reduction kits

24 Control axle movement Remove all compliance Remove all compliance Allow movement where YOU want it Allow movement where YOU want it Steel bushes instead of rubber Steel bushes instead of rubber

25 Wheels Wire wheels – 5.5J x 14 Wire wheels – 5.5J x 14 Alloy wheels – 5.5J x 14. The right wheel will fit without body mods Alloy wheels – 5.5J x 14. The right wheel will fit without body mods Alloy wheels – 6Jx14. Usually requires wing mods. Alloy wheels – 6Jx14. Usually requires wing mods. Centre lock alloy wheels - too heavy? Centre lock alloy wheels - too heavy?

26 Tyres Black, round and sticky ! Black, round and sticky ! Avon CR6 ZZ Avon CR6 ZZ Vredestein – various types Vredestein – various types Dunlop Formula R Dunlop Formula R

27 Engine tuning The world is your oyster!! The world is your oyster!! There is too much choice!! There is too much choice!! How do you decide what to do? How do you decide what to do?

28 Head, cam or carbs? Head is the main improvement Head is the main improvement Camshaft is next Camshaft is next Carbs are the last !! Carbs are the last !!

29 Block preparation Cleanliness is everything Cleanliness is everything


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